• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
5  * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
6  * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions are met:
10  *
11  * a) Redistributions of source code must retain the above copyright notice,
12  *    this list of conditions and the following disclaimer.
13  *
14  * b) Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in
16  *    the documentation and/or other materials provided with the distribution.
17  *
18  * c) Neither the name of Cisco Systems, Inc. nor the names of its
19  *    contributors may be used to endorse or promote products derived
20  *    from this software without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
24  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32  * THE POSSIBILITY OF SUCH DAMAGE.
33  */
34 
35 #if defined(__FreeBSD__) && !defined(__Userspace__)
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD: head/sys/netinet/sctp.h 356357 2020-01-04 20:33:12Z tuexen $");
38 #endif
39 
40 #ifndef _NETINET_SCTP_H_
41 #define _NETINET_SCTP_H_
42 
43 #if defined(__APPLE__) || defined(__linux__)
44 #include <stdint.h>
45 #endif
46 
47 #include <sys/types.h>
48 
49 
50 #if !defined(_WIN32)
51 #define SCTP_PACKED __attribute__((packed))
52 #else
53 #pragma pack (push, 1)
54 #define SCTP_PACKED
55 #endif
56 
57 /*
58  * SCTP protocol - RFC4960.
59  */
60 struct sctphdr {
61 	uint16_t src_port;	/* source port */
62 	uint16_t dest_port;	/* destination port */
63 	uint32_t v_tag;		/* verification tag of packet */
64 	uint32_t checksum;	/* CRC32C checksum */
65 	/* chunks follow... */
66 } SCTP_PACKED;
67 
68 /*
69  * SCTP Chunks
70  */
71 struct sctp_chunkhdr {
72 	uint8_t chunk_type;	/* chunk type */
73 	uint8_t chunk_flags;	/* chunk flags */
74 	uint16_t chunk_length;	/* chunk length */
75 	/* optional params follow */
76 } SCTP_PACKED;
77 
78 /*
79  * SCTP chunk parameters
80  */
81 struct sctp_paramhdr {
82 	uint16_t param_type;	/* parameter type */
83 	uint16_t param_length;	/* parameter length */
84 } SCTP_PACKED;
85 
86 /*
87  * user socket options: socket API defined
88  */
89 /*
90  * read-write options
91  */
92 #define SCTP_RTOINFO			0x00000001
93 #define SCTP_ASSOCINFO			0x00000002
94 #define SCTP_INITMSG			0x00000003
95 #define SCTP_NODELAY			0x00000004
96 #define SCTP_AUTOCLOSE			0x00000005
97 #define SCTP_SET_PEER_PRIMARY_ADDR	0x00000006
98 #define SCTP_PRIMARY_ADDR		0x00000007
99 #define SCTP_ADAPTATION_LAYER		0x00000008
100 /* same as above */
101 #define SCTP_ADAPTION_LAYER		0x00000008
102 #define SCTP_DISABLE_FRAGMENTS		0x00000009
103 #define SCTP_PEER_ADDR_PARAMS 		0x0000000a
104 #define SCTP_DEFAULT_SEND_PARAM		0x0000000b
105 /* ancillary data/notification interest options */
106 #define SCTP_EVENTS			0x0000000c /* deprecated */
107 /* Without this applied we will give V4 and V6 addresses on a V6 socket */
108 #define SCTP_I_WANT_MAPPED_V4_ADDR	0x0000000d
109 #define SCTP_MAXSEG 			0x0000000e
110 #define SCTP_DELAYED_SACK               0x0000000f
111 #define SCTP_FRAGMENT_INTERLEAVE        0x00000010
112 #define SCTP_PARTIAL_DELIVERY_POINT     0x00000011
113 /* authentication support */
114 #define SCTP_AUTH_CHUNK 		0x00000012
115 #define SCTP_AUTH_KEY 			0x00000013
116 #define SCTP_HMAC_IDENT 		0x00000014
117 #define SCTP_AUTH_ACTIVE_KEY 		0x00000015
118 #define SCTP_AUTH_DELETE_KEY 		0x00000016
119 #define SCTP_USE_EXT_RCVINFO		0x00000017
120 #define SCTP_AUTO_ASCONF		0x00000018 /* rw */
121 #define SCTP_MAXBURST			0x00000019 /* rw */
122 #define SCTP_MAX_BURST			0x00000019 /* rw */
123 /* assoc level context */
124 #define SCTP_CONTEXT                    0x0000001a /* rw */
125 /* explicit EOR signalling */
126 #define SCTP_EXPLICIT_EOR               0x0000001b
127 #define SCTP_REUSE_PORT                 0x0000001c /* rw */
128 #define SCTP_AUTH_DEACTIVATE_KEY	0x0000001d
129 #define SCTP_EVENT                      0x0000001e
130 #define SCTP_RECVRCVINFO                0x0000001f
131 #define SCTP_RECVNXTINFO                0x00000020
132 #define SCTP_DEFAULT_SNDINFO            0x00000021
133 #define SCTP_DEFAULT_PRINFO             0x00000022
134 #define SCTP_PEER_ADDR_THLDS            0x00000023
135 #define SCTP_REMOTE_UDP_ENCAPS_PORT     0x00000024
136 #define SCTP_ECN_SUPPORTED              0x00000025
137 #define SCTP_PR_SUPPORTED               0x00000026
138 #define SCTP_AUTH_SUPPORTED             0x00000027
139 #define SCTP_ASCONF_SUPPORTED           0x00000028
140 #define SCTP_RECONFIG_SUPPORTED         0x00000029
141 #define SCTP_NRSACK_SUPPORTED           0x00000030
142 #define SCTP_PKTDROP_SUPPORTED          0x00000031
143 #define SCTP_MAX_CWND                   0x00000032
144 
145 /*
146  * read-only options
147  */
148 #define SCTP_STATUS			0x00000100
149 #define SCTP_GET_PEER_ADDR_INFO		0x00000101
150 /* authentication support */
151 #define SCTP_PEER_AUTH_CHUNKS 		0x00000102
152 #define SCTP_LOCAL_AUTH_CHUNKS 		0x00000103
153 #define SCTP_GET_ASSOC_NUMBER           0x00000104 /* ro */
154 #define SCTP_GET_ASSOC_ID_LIST          0x00000105 /* ro */
155 #define SCTP_TIMEOUTS                   0x00000106
156 #define SCTP_PR_STREAM_STATUS           0x00000107
157 #define SCTP_PR_ASSOC_STATUS            0x00000108
158 
159 /*
160  * user socket options: BSD implementation specific
161  */
162 /*
163  * Blocking I/O is enabled on any TCP type socket by default. For the UDP
164  * model if this is turned on then the socket buffer is shared for send
165  * resources amongst all associations.  The default for the UDP model is that
166  * is SS_NBIO is set.  Which means all associations have a separate send
167  * limit BUT they will NOT ever BLOCK instead you will get an error back
168  * EAGAIN if you try to send too much. If you want the blocking semantics you
169  * set this option at the cost of sharing one socket send buffer size amongst
170  * all associations. Peeled off sockets turn this option off and block. But
171  * since both TCP and peeled off sockets have only one assoc per socket this
172  * is fine. It probably does NOT make sense to set this on SS_NBIO on a TCP
173  * model OR peeled off UDP model, but we do allow you to do so. You just use
174  * the normal syscall to toggle SS_NBIO the way you want.
175  *
176  * Blocking I/O is controlled by the SS_NBIO flag on the socket state so_state
177  * field.
178  */
179 
180 #define SCTP_ENABLE_STREAM_RESET	0x00000900 /* struct sctp_assoc_value */
181 #define SCTP_RESET_STREAMS		0x00000901 /* struct sctp_reset_streams */
182 #define SCTP_RESET_ASSOC		0x00000902 /* sctp_assoc_t */
183 #define SCTP_ADD_STREAMS		0x00000903 /* struct sctp_add_streams */
184 
185 /* For enable stream reset */
186 #define SCTP_ENABLE_RESET_STREAM_REQ 	0x00000001
187 #define SCTP_ENABLE_RESET_ASSOC_REQ 	0x00000002
188 #define SCTP_ENABLE_CHANGE_ASSOC_REQ 	0x00000004
189 #define SCTP_ENABLE_VALUE_MASK		0x00000007
190 /* For reset streams */
191 #define SCTP_STREAM_RESET_INCOMING	0x00000001
192 #define SCTP_STREAM_RESET_OUTGOING	0x00000002
193 
194 
195 /* here on down are more implementation specific */
196 #define SCTP_SET_DEBUG_LEVEL		0x00001005
197 #define SCTP_CLR_STAT_LOG               0x00001007
198 /* CMT ON/OFF socket option */
199 #define SCTP_CMT_ON_OFF                 0x00001200
200 #define SCTP_CMT_USE_DAC                0x00001201
201 /* JRS - Pluggable Congestion Control Socket option */
202 #define SCTP_PLUGGABLE_CC               0x00001202
203 /* RS - Pluggable Stream Scheduling Socket option */
204 #define SCTP_PLUGGABLE_SS		0x00001203
205 #define SCTP_SS_VALUE			0x00001204
206 #define SCTP_CC_OPTION			0x00001205 /* Options for CC modules */
207 /* For I-DATA */
208 #define SCTP_INTERLEAVING_SUPPORTED	0x00001206
209 
210 /* read only */
211 #define SCTP_GET_SNDBUF_USE		0x00001101
212 #define SCTP_GET_STAT_LOG		0x00001103
213 #define SCTP_PCB_STATUS			0x00001104
214 #define SCTP_GET_NONCE_VALUES           0x00001105
215 
216 
217 /* Special hook for dynamically setting primary for all assoc's,
218  * this is a write only option that requires root privilege.
219  */
220 #define SCTP_SET_DYNAMIC_PRIMARY        0x00002001
221 
222 /* VRF (virtual router feature) and multi-VRF support
223  * options. VRF's provide splits within a router
224  * that give the views of multiple routers. A
225  * standard host, without VRF support, is just
226  * a single VRF. If VRF's are supported then
227  * the transport must be VRF aware. This means
228  * that every socket call coming in must be directed
229  * within the endpoint to one of the VRF's it belongs
230  * to. The endpoint, before binding, may select
231  * the "default" VRF it is in by using a set socket
232  * option with SCTP_VRF_ID. This will also
233  * get propagated to the default VRF. Once the
234  * endpoint binds an address then it CANNOT add
235  * additional VRF's to become a Multi-VRF endpoint.
236  *
237  * Before BINDING additional VRF's can be added with
238  * the SCTP_ADD_VRF_ID call or deleted with
239  * SCTP_DEL_VRF_ID.
240  *
241  * Associations are ALWAYS contained inside a single
242  * VRF. They cannot reside in two (or more) VRF's. Incoming
243  * packets, assuming the router is VRF aware, can always
244  * tell us what VRF they arrived on. A host not supporting
245  * any VRF's will find that the packets always arrived on the
246  * single VRF that the host has.
247  *
248  */
249 
250 #define SCTP_VRF_ID			0x00003001
251 #define SCTP_ADD_VRF_ID			0x00003002
252 #define SCTP_GET_VRF_IDS		0x00003003
253 #define SCTP_GET_ASOC_VRF               0x00003004
254 #define SCTP_DEL_VRF_ID                 0x00003005
255 
256 /*
257  * If you enable packet logging you can get
258  * a poor mans ethereal output in binary
259  * form. Note this is a compile option to
260  * the kernel,  SCTP_PACKET_LOGGING, and
261  * without it in your kernel you
262  * will get a EOPNOTSUPP
263  */
264 #define SCTP_GET_PACKET_LOG             0x00004001
265 
266 /*
267  * hidden implementation specific options these are NOT user visible (should
268  * move out of sctp.h)
269  */
270 /* sctp_bindx() flags as hidden socket options */
271 #define SCTP_BINDX_ADD_ADDR		0x00008001
272 #define SCTP_BINDX_REM_ADDR		0x00008002
273 /* Hidden socket option that gets the addresses */
274 #define SCTP_GET_PEER_ADDRESSES		0x00008003
275 #define SCTP_GET_LOCAL_ADDRESSES	0x00008004
276 /* return the total count in bytes needed to hold all local addresses bound */
277 #define SCTP_GET_LOCAL_ADDR_SIZE	0x00008005
278 /* Return the total count in bytes needed to hold the remote address */
279 #define SCTP_GET_REMOTE_ADDR_SIZE	0x00008006
280 /* hidden option for connectx */
281 #define SCTP_CONNECT_X			0x00008007
282 /* hidden option for connectx_delayed, part of sendx */
283 #define SCTP_CONNECT_X_DELAYED		0x00008008
284 #define SCTP_CONNECT_X_COMPLETE         0x00008009
285 /* hidden socket option based sctp_peeloff */
286 #define SCTP_PEELOFF                    0x0000800a
287 /* the real worker for sctp_getaddrlen() */
288 #define SCTP_GET_ADDR_LEN               0x0000800b
289 #if defined(__APPLE__) && !defined(__Userspace__)
290 /* temporary workaround for Apple listen() issue, no args used */
291 #define SCTP_LISTEN_FIX			0x0000800c
292 #endif
293 #if defined(_WIN32) && !defined(__Userspace__)
294 /* workaround for Cygwin on Windows: returns the SOCKET handle */
295 #define SCTP_GET_HANDLE			0x0000800d
296 #endif
297 /* Debug things that need to be purged */
298 #define SCTP_SET_INITIAL_DBG_SEQ	0x00009f00
299 
300 /* JRS - Supported congestion control modules for pluggable
301  * congestion control
302  */
303 /* Standard TCP Congestion Control */
304 #define SCTP_CC_RFC2581		0x00000000
305 /* High Speed TCP Congestion Control (Floyd) */
306 #define SCTP_CC_HSTCP		0x00000001
307 /* HTCP Congestion Control */
308 #define SCTP_CC_HTCP		0x00000002
309 /* RTCC Congestion Control - RFC2581 plus */
310 #define SCTP_CC_RTCC            0x00000003
311 
312 #define SCTP_CC_OPT_RTCC_SETMODE	0x00002000
313 #define SCTP_CC_OPT_USE_DCCC_ECN	0x00002001
314 #define SCTP_CC_OPT_STEADY_STEP         0x00002002
315 
316 #define SCTP_CMT_OFF            0
317 #define SCTP_CMT_BASE           1
318 #define SCTP_CMT_RPV1           2
319 #define SCTP_CMT_RPV2           3
320 #define SCTP_CMT_MPTCP          4
321 #define SCTP_CMT_MAX            SCTP_CMT_MPTCP
322 
323 /* RS - Supported stream scheduling modules for pluggable
324  * stream scheduling
325  */
326 /* Default simple round-robin */
327 #define SCTP_SS_DEFAULT			0x00000000
328 /* Real round-robin */
329 #define SCTP_SS_ROUND_ROBIN		0x00000001
330 /* Real round-robin per packet */
331 #define SCTP_SS_ROUND_ROBIN_PACKET	0x00000002
332 /* Priority */
333 #define SCTP_SS_PRIORITY		0x00000003
334 /* Fair Bandwidth */
335 #define SCTP_SS_FAIR_BANDWITH		0x00000004
336 /* First-come, first-serve */
337 #define SCTP_SS_FIRST_COME		0x00000005
338 
339 
340 /* fragment interleave constants
341  * setting must be one of these or
342  * EINVAL returned.
343  */
344 #define SCTP_FRAG_LEVEL_0    0x00000000
345 #define SCTP_FRAG_LEVEL_1    0x00000001
346 #define SCTP_FRAG_LEVEL_2    0x00000002
347 
348 /*
349  * user state values
350  */
351 #define SCTP_CLOSED			0x0000
352 #define SCTP_BOUND			0x1000
353 #define SCTP_LISTEN			0x2000
354 #define SCTP_COOKIE_WAIT		0x0002
355 #define SCTP_COOKIE_ECHOED		0x0004
356 #define SCTP_ESTABLISHED		0x0008
357 #define SCTP_SHUTDOWN_SENT		0x0010
358 #define SCTP_SHUTDOWN_RECEIVED		0x0020
359 #define SCTP_SHUTDOWN_ACK_SENT		0x0040
360 #define SCTP_SHUTDOWN_PENDING		0x0080
361 
362 /*
363  * SCTP operational error codes (user visible)
364  */
365 #define SCTP_CAUSE_NO_ERROR		0x0000
366 #define SCTP_CAUSE_INVALID_STREAM	0x0001
367 #define SCTP_CAUSE_MISSING_PARAM	0x0002
368 #define SCTP_CAUSE_STALE_COOKIE		0x0003
369 #define SCTP_CAUSE_OUT_OF_RESC		0x0004
370 #define SCTP_CAUSE_UNRESOLVABLE_ADDR	0x0005
371 #define SCTP_CAUSE_UNRECOG_CHUNK	0x0006
372 #define SCTP_CAUSE_INVALID_PARAM	0x0007
373 #define SCTP_CAUSE_UNRECOG_PARAM	0x0008
374 #define SCTP_CAUSE_NO_USER_DATA		0x0009
375 #define SCTP_CAUSE_COOKIE_IN_SHUTDOWN	0x000a
376 #define SCTP_CAUSE_RESTART_W_NEWADDR	0x000b
377 #define SCTP_CAUSE_USER_INITIATED_ABT	0x000c
378 #define SCTP_CAUSE_PROTOCOL_VIOLATION	0x000d
379 
380 /* Error causes from RFC5061 */
381 #define SCTP_CAUSE_DELETING_LAST_ADDR	0x00a0
382 #define SCTP_CAUSE_RESOURCE_SHORTAGE	0x00a1
383 #define SCTP_CAUSE_DELETING_SRC_ADDR	0x00a2
384 #define SCTP_CAUSE_ILLEGAL_ASCONF_ACK	0x00a3
385 #define SCTP_CAUSE_REQUEST_REFUSED	0x00a4
386 
387 /* Error causes from nat-draft */
388 #define SCTP_CAUSE_NAT_COLLIDING_STATE  0x00b0
389 #define SCTP_CAUSE_NAT_MISSING_STATE    0x00b1
390 
391 /* Error causes from RFC4895 */
392 #define SCTP_CAUSE_UNSUPPORTED_HMACID	0x0105
393 
394 /*
395  * error cause parameters (user visible)
396  */
397 struct sctp_gen_error_cause {
398 	uint16_t code;
399 	uint16_t length;
400 	uint8_t info[];
401 } SCTP_PACKED;
402 
403 struct sctp_error_cause {
404 	uint16_t code;
405 	uint16_t length;
406 	/* optional cause-specific info may follow */
407 } SCTP_PACKED;
408 
409 struct sctp_error_invalid_stream {
410 	struct sctp_error_cause cause;	/* code=SCTP_CAUSE_INVALID_STREAM */
411 	uint16_t stream_id;	/* stream id of the DATA in error */
412 	uint16_t reserved;
413 } SCTP_PACKED;
414 
415 struct sctp_error_missing_param {
416 	struct sctp_error_cause cause;	/* code=SCTP_CAUSE_MISSING_PARAM */
417 	uint32_t num_missing_params;	/* number of missing parameters */
418 	uint16_t type[];
419 } SCTP_PACKED;
420 
421 struct sctp_error_stale_cookie {
422 	struct sctp_error_cause cause;	/* code=SCTP_CAUSE_STALE_COOKIE */
423 	uint32_t stale_time;	/* time in usec of staleness */
424 } SCTP_PACKED;
425 
426 struct sctp_error_out_of_resource {
427 	struct sctp_error_cause cause;	/* code=SCTP_CAUSE_OUT_OF_RESOURCES */
428 } SCTP_PACKED;
429 
430 struct sctp_error_unresolv_addr {
431 	struct sctp_error_cause cause;	/* code=SCTP_CAUSE_UNRESOLVABLE_ADDR */
432 } SCTP_PACKED;
433 
434 struct sctp_error_unrecognized_chunk {
435 	struct sctp_error_cause cause;	/* code=SCTP_CAUSE_UNRECOG_CHUNK */
436 	struct sctp_chunkhdr ch;/* header from chunk in error */
437 } SCTP_PACKED;
438 
439 struct sctp_error_no_user_data {
440 	struct sctp_error_cause cause;	/* code=SCTP_CAUSE_NO_USER_DATA */
441 	uint32_t tsn;			/* TSN of the empty data chunk */
442 } SCTP_PACKED;
443 
444 struct sctp_error_auth_invalid_hmac {
445 	struct sctp_error_cause cause;	/* code=SCTP_CAUSE_UNSUPPORTED_HMACID */
446 	uint16_t hmac_id;
447 } SCTP_PACKED;
448 
449 /*
450  * Main SCTP chunk types we place these here so natd and f/w's in user land
451  * can find them.
452  */
453 /************0x00 series ***********/
454 #define SCTP_DATA		0x00
455 #define SCTP_INITIATION		0x01
456 #define SCTP_INITIATION_ACK	0x02
457 #define SCTP_SELECTIVE_ACK	0x03
458 #define SCTP_HEARTBEAT_REQUEST	0x04
459 #define SCTP_HEARTBEAT_ACK	0x05
460 #define SCTP_ABORT_ASSOCIATION	0x06
461 #define SCTP_SHUTDOWN		0x07
462 #define SCTP_SHUTDOWN_ACK	0x08
463 #define SCTP_OPERATION_ERROR	0x09
464 #define SCTP_COOKIE_ECHO	0x0a
465 #define SCTP_COOKIE_ACK		0x0b
466 #define SCTP_ECN_ECHO		0x0c
467 #define SCTP_ECN_CWR		0x0d
468 #define SCTP_SHUTDOWN_COMPLETE	0x0e
469 /* RFC4895 */
470 #define SCTP_AUTHENTICATION     0x0f
471 /* EY nr_sack chunk id*/
472 #define SCTP_NR_SELECTIVE_ACK	0x10
473 /************0x40 series ***********/
474 #define SCTP_IDATA		0x40
475 /************0x80 series ***********/
476 /* RFC5061 */
477 #define	SCTP_ASCONF_ACK		0x80
478 /* draft-ietf-stewart-pktdrpsctp */
479 #define SCTP_PACKET_DROPPED	0x81
480 /* draft-ietf-stewart-strreset-xxx */
481 #define SCTP_STREAM_RESET       0x82
482 
483 /* RFC4820                         */
484 #define SCTP_PAD_CHUNK          0x84
485 /************0xc0 series ***********/
486 /* RFC3758 */
487 #define SCTP_FORWARD_CUM_TSN	0xc0
488 /* RFC5061 */
489 #define SCTP_ASCONF		0xc1
490 #define SCTP_IFORWARD_CUM_TSN	0xc2
491 
492 /* ABORT and SHUTDOWN COMPLETE FLAG */
493 #define SCTP_HAD_NO_TCB		0x01
494 
495 /* Packet dropped flags */
496 #define SCTP_FROM_MIDDLE_BOX	SCTP_HAD_NO_TCB
497 #define SCTP_BADCRC		0x02
498 #define SCTP_PACKET_TRUNCATED	0x04
499 
500 /* Flag for ECN -CWR */
501 #define SCTP_CWR_REDUCE_OVERRIDE 0x01
502 #define SCTP_CWR_IN_SAME_WINDOW  0x02
503 
504 #define SCTP_SAT_NETWORK_MIN	400	/* min ms for RTT to set satellite
505 					 * time */
506 #define SCTP_SAT_NETWORK_BURST_INCR  2	/* how many times to multiply maxburst
507 					 * in sat */
508 
509 /* Data Chuck Specific Flags */
510 #define SCTP_DATA_FRAG_MASK        0x03
511 #define SCTP_DATA_MIDDLE_FRAG      0x00
512 #define SCTP_DATA_LAST_FRAG        0x01
513 #define SCTP_DATA_FIRST_FRAG       0x02
514 #define SCTP_DATA_NOT_FRAG         0x03
515 #define SCTP_DATA_UNORDERED        0x04
516 #define SCTP_DATA_SACK_IMMEDIATELY 0x08
517 /* ECN Nonce: SACK Chunk Specific Flags */
518 #define SCTP_SACK_NONCE_SUM        0x01
519 
520 /* CMT DAC algorithm SACK flag */
521 #define SCTP_SACK_CMT_DAC          0x80
522 
523 /*
524  * PCB flags (in sctp_flags bitmask).
525  * Note the features and flags are meant
526  * for use by netstat.
527  */
528 #define SCTP_PCB_FLAGS_UDPTYPE		0x00000001
529 #define SCTP_PCB_FLAGS_TCPTYPE		0x00000002
530 #define SCTP_PCB_FLAGS_BOUNDALL		0x00000004
531 #define SCTP_PCB_FLAGS_ACCEPTING	0x00000008
532 #define SCTP_PCB_FLAGS_UNBOUND		0x00000010
533 #define SCTP_PCB_FLAGS_SND_ITERATOR_UP  0x00000020
534 #define SCTP_PCB_FLAGS_CLOSE_IP         0x00040000
535 #define SCTP_PCB_FLAGS_WAS_CONNECTED    0x00080000
536 #define SCTP_PCB_FLAGS_WAS_ABORTED      0x00100000
537 /* TCP model support */
538 
539 #define SCTP_PCB_FLAGS_CONNECTED	0x00200000
540 #define SCTP_PCB_FLAGS_IN_TCPPOOL	0x00400000
541 #define SCTP_PCB_FLAGS_DONT_WAKE	0x00800000
542 #define SCTP_PCB_FLAGS_WAKEOUTPUT	0x01000000
543 #define SCTP_PCB_FLAGS_WAKEINPUT	0x02000000
544 #define SCTP_PCB_FLAGS_BOUND_V6		0x04000000
545 #define SCTP_PCB_FLAGS_BLOCKING_IO	0x08000000
546 #define SCTP_PCB_FLAGS_SOCKET_GONE	0x10000000
547 #define SCTP_PCB_FLAGS_SOCKET_ALLGONE	0x20000000
548 #define SCTP_PCB_FLAGS_SOCKET_CANT_READ	0x40000000
549 #if defined(__Userspace__)
550 #define SCTP_PCB_FLAGS_BOUND_CONN       0x80000000
551 
552 /* flags to copy to new PCB */
553 #define SCTP_PCB_COPY_FLAGS		(SCTP_PCB_FLAGS_BOUNDALL|\
554 					 SCTP_PCB_FLAGS_WAKEINPUT|\
555 					 SCTP_PCB_FLAGS_BOUND_V6|\
556 					 SCTP_PCB_FLAGS_BOUND_CONN)
557 #else
558 
559 /* flags to copy to new PCB */
560 #define SCTP_PCB_COPY_FLAGS		(SCTP_PCB_FLAGS_BOUNDALL|\
561 					 SCTP_PCB_FLAGS_WAKEINPUT|\
562 					 SCTP_PCB_FLAGS_BOUND_V6)
563 #endif
564 
565 /*
566  * PCB Features (in sctp_features bitmask)
567  */
568 #define SCTP_PCB_FLAGS_DO_NOT_PMTUD      0x0000000000000001
569 #define SCTP_PCB_FLAGS_EXT_RCVINFO       0x0000000000000002 /* deprecated */
570 #define SCTP_PCB_FLAGS_DONOT_HEARTBEAT   0x0000000000000004
571 #define SCTP_PCB_FLAGS_FRAG_INTERLEAVE   0x0000000000000008
572 #define SCTP_PCB_FLAGS_INTERLEAVE_STRMS  0x0000000000000010
573 #define SCTP_PCB_FLAGS_DO_ASCONF         0x0000000000000020
574 #define SCTP_PCB_FLAGS_AUTO_ASCONF       0x0000000000000040
575 /* socket options */
576 #define SCTP_PCB_FLAGS_NODELAY           0x0000000000000100
577 #define SCTP_PCB_FLAGS_AUTOCLOSE         0x0000000000000200
578 #define SCTP_PCB_FLAGS_RECVDATAIOEVNT    0x0000000000000400 /* deprecated */
579 #define SCTP_PCB_FLAGS_RECVASSOCEVNT     0x0000000000000800
580 #define SCTP_PCB_FLAGS_RECVPADDREVNT     0x0000000000001000
581 #define SCTP_PCB_FLAGS_RECVPEERERR       0x0000000000002000
582 #define SCTP_PCB_FLAGS_RECVSENDFAILEVNT  0x0000000000004000 /* deprecated */
583 #define SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT  0x0000000000008000
584 #define SCTP_PCB_FLAGS_ADAPTATIONEVNT    0x0000000000010000
585 #define SCTP_PCB_FLAGS_PDAPIEVNT         0x0000000000020000
586 #define SCTP_PCB_FLAGS_AUTHEVNT          0x0000000000040000
587 #define SCTP_PCB_FLAGS_STREAM_RESETEVNT  0x0000000000080000
588 #define SCTP_PCB_FLAGS_NO_FRAGMENT       0x0000000000100000
589 #define SCTP_PCB_FLAGS_EXPLICIT_EOR      0x0000000000400000
590 #define SCTP_PCB_FLAGS_NEEDS_MAPPED_V4   0x0000000000800000
591 #define SCTP_PCB_FLAGS_MULTIPLE_ASCONFS  0x0000000001000000
592 #define SCTP_PCB_FLAGS_PORTREUSE         0x0000000002000000
593 #define SCTP_PCB_FLAGS_DRYEVNT           0x0000000004000000
594 #define SCTP_PCB_FLAGS_RECVRCVINFO       0x0000000008000000
595 #define SCTP_PCB_FLAGS_RECVNXTINFO       0x0000000010000000
596 #define SCTP_PCB_FLAGS_ASSOC_RESETEVNT   0x0000000020000000
597 #define SCTP_PCB_FLAGS_STREAM_CHANGEEVNT 0x0000000040000000
598 #define SCTP_PCB_FLAGS_RECVNSENDFAILEVNT 0x0000000080000000
599 
600 /*-
601  * mobility_features parameters (by micchie).Note
602  * these features are applied against the
603  * sctp_mobility_features flags.. not the sctp_features
604  * flags.
605  */
606 #define SCTP_MOBILITY_BASE               0x00000001
607 #define SCTP_MOBILITY_FASTHANDOFF        0x00000002
608 #define SCTP_MOBILITY_PRIM_DELETED       0x00000004
609 
610 
611 /* Smallest PMTU allowed when disabling PMTU discovery */
612 #define SCTP_SMALLEST_PMTU 512
613 /* Largest PMTU allowed when disabling PMTU discovery */
614 #define SCTP_LARGEST_PMTU  65536
615 
616 #if defined(_WIN32)
617 #pragma pack(pop)
618 #endif
619 #undef SCTP_PACKED
620 
621 #include <netinet/sctp_uio.h>
622 
623 /* This dictates the size of the packet
624  * collection buffer. This only applies
625  * if SCTP_PACKET_LOGGING is enabled in
626  * your config.
627  */
628 #define SCTP_PACKET_LOG_SIZE 65536
629 
630 /* Maximum delays and such a user can set for options that
631  * take ms.
632  */
633 #define SCTP_MAX_SACK_DELAY 500 /* per RFC4960 */
634 #define SCTP_MAX_HB_INTERVAL 14400000 /* 4 hours in ms */
635 #define SCTP_MAX_COOKIE_LIFE  3600000 /* 1 hour in ms */
636 
637 
638 /* Types of logging/KTR tracing  that can be enabled via the
639  * sysctl net.inet.sctp.sctp_logging. You must also enable
640  * SUBSYS tracing.
641  * Note that you must have the SCTP option in the kernel
642  * to enable these as well.
643  */
644 #define SCTP_BLK_LOGGING_ENABLE				0x00000001
645 #define SCTP_CWND_MONITOR_ENABLE			0x00000002
646 #define SCTP_CWND_LOGGING_ENABLE			0x00000004
647 #define SCTP_FLIGHT_LOGGING_ENABLE			0x00000020
648 #define SCTP_FR_LOGGING_ENABLE				0x00000040
649 #define SCTP_LOCK_LOGGING_ENABLE			0x00000080
650 #define SCTP_MAP_LOGGING_ENABLE				0x00000100
651 #define SCTP_MBCNT_LOGGING_ENABLE			0x00000200
652 #define SCTP_MBUF_LOGGING_ENABLE			0x00000400
653 #define SCTP_NAGLE_LOGGING_ENABLE			0x00000800
654 #define SCTP_RECV_RWND_LOGGING_ENABLE			0x00001000
655 #define SCTP_RTTVAR_LOGGING_ENABLE			0x00002000
656 #define SCTP_SACK_LOGGING_ENABLE			0x00004000
657 #define SCTP_SACK_RWND_LOGGING_ENABLE			0x00008000
658 #define SCTP_SB_LOGGING_ENABLE				0x00010000
659 #define SCTP_STR_LOGGING_ENABLE				0x00020000
660 #define SCTP_WAKE_LOGGING_ENABLE			0x00040000
661 #define SCTP_LOG_MAXBURST_ENABLE			0x00080000
662 #define SCTP_LOG_RWND_ENABLE    			0x00100000
663 #define SCTP_LOG_SACK_ARRIVALS_ENABLE			0x00200000
664 #define SCTP_LTRACE_CHUNK_ENABLE			0x00400000
665 #define SCTP_LTRACE_ERROR_ENABLE			0x00800000
666 #define SCTP_LAST_PACKET_TRACING			0x01000000
667 #define SCTP_THRESHOLD_LOGGING				0x02000000
668 #define SCTP_LOG_AT_SEND_2_SCTP				0x04000000
669 #define SCTP_LOG_AT_SEND_2_OUTQ				0x08000000
670 #define SCTP_LOG_TRY_ADVANCE				0x10000000
671 
672 #endif				/* !_NETINET_SCTP_H_ */
673